Machine for forming screw-threaded wire.



No. 655,223. Patented Aug. 7, [900.

a eonnu.

MACHINE FOR FURMINGSCREW THREADED WIRE.

(Application filed Aug. 17, 1598.) (No Model.) 4-Sheets-Sheet I.

WITNEEEEE- %aaw Wi MM:

N VENTUR wLaLw ATT'Y.

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No. 655,223. FatehtedAug. 7, I900.

(a. soonu.

MACHINE FOR FORMING SCREW THREADED WIRE.

(Application filed Aug. 17, 1898.) (No Model.) 4 Sheets-Sheet 2,

-Nw i lNWiNTUR ATTY.

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Patented Aug. 7, I900.

G. GODDU. MACHINE FOR FORMING SCREW THREADED WIRE.

(Application filed Aug. 17, 189B.)

4 $heetsSheet 3 (No Model.)

ATTY

No'. 655,223. r Patented Aug. 7, I900 a. aonnu.

MACHINE FOR FORMING SCREW THREADED WIRE.

(Application filed Aug. 17, 1898.) (No Model.) 4 Sheets-Sheet 4.

$ sss WITNEEEIEVE; L INVENTEJR UNITED ST TES- PATENT OFFICE.

GEORGE GODDU, OF WINCHESTER, MASSACHUSETTS, ASSIGNOR TO THE UNITED SHOE MACHINERY COMPANY, OF NEW JERSEY.

MACHINE FOR FORMING SCREW-THREADED WIRE.

SPECIFICATION formingpart of Letters Patent No. 65 5,223, dated August '7, 1900. Application filed August 17,1398. Serial No. 688,770. (No model.)

ment in Machines for Forming Screw-Threaded Wire, of which the following description, in connection with the accompanying drawings, is a specification, like letters and'numerals on the drawings representing like parts.

This invention relates to a machine for forming screw-threads on wire or like cylindrical bodies, and is especially designed and adapted for forming screw-threaded wire having a substantially-large number of threads to the inch and such as is used in the manu feature of boots and shoes.

My present invention has for its object to provide a simple and efficient machine which is particularly Well adapted for accurately forming a substantially large number of substantially deep-screw threads to the inch or other predetermined length Without hardening orotherwiseinjuriously affecting the wire, so as to render the finished Wire brittle and liable to break under torsional strain to which it is subjected when turned or inserted into the work, such as the outer sole of a boot or shoe.

In accordance with this invention the injurious action to the wire above referred to may be avoided with a machine in which the wire is presented to the threading-rolls in its normal condition and is yet held in front of the threading disks or rolls from twisting in such manner as will not subject it to a l ar- This re-.

dening or other injurious action. sult may be accomplished in accordance with this invention by providing-a machinefin which the wire on its passage to the thread ing rolls or disks is caused to move in a path at an angle with and preferably approximating a right angle to the path of movement of the wire while under the action of the thread.- ing disks or rolls, which in the present case are loosely mounted and are carried about the wire and act as feed-rolls. The threading-disks may and preferably will be of a special construction, as will be described.

These and other features of this invention will bepointed out in the claims at the end of this specification.

Figure l is a plan view of a machine embodying this invention; Fig. 2, an elevation of the machine shown in Fig. 1 looking in the direction of the arrow thereon; Fig. 3, an elevation of the machine shown in Fig. 1 looking toward the left; Fig. 4, a sectional detail taken on the line 4 4, Fig. 3, looking toward the right; Fig. 5, a longitudinal horizontal sectional detail, on an enlarged scale, to be referred to; Fig. 6, a sectional detail on the line 6 6, Fig. 5; Figs. 7 and 8, details to be referred to.

The operating parts of the machine herein shown as embodying this invention are supported upon a suitable base or table A, provided with suitable legs A. The base A, as shown, has erected from it an upright A which supports at its upper end a hollow spindle or stationary shaft a, firmly secured at one end in a suitable opening in the said upright by a clamping-screw a. (See Figs. 1 and 3.) The hollow spindle or shaft a has loosely mounted upon it a revoluble carrier for threading disks orrollsa a preferably of a construction as will be described, the said carrier being preferably made as herein shown and comprising an outer cylinder or sleeve a, an inner sleeve or cylinder a sepa-;

rated from the outer cylinder to form an oil well or chamber c having suitable outletports 20, but which inner cylinder is secured to said outer cylinder. In the present instance the sleeve a is secured to the cylinder of by screw-threads 01, and the said carrier is secured on the shaft or against endwise movement by a ring a engaging a flange a on the said sleeve, a washer a of leatheror axial'cent'erof thecylind er, and the said head is provided witha diametrical slot or opening a, (see Figs. 3 and 5,) in which are dove V tailed or otherwise fitted sliding blocks a at,

- shown, with antifriction or roller bearings 03 L1 The threading-disks a a may further be provided with ball-bearings a (1 on their opposite sides or faces, (see Fig. 3,) the balls 00 being located in an annular groove in a disk or plate a, secured to each sliding block a a as by screw a and the balls 01. are located in an annular groove in the front face of each threading-disk, 0!, a and retained therein by heads a on the pins or studs 01 61 The sliding blocks a a are adjustable in the dovetail slot 0., preferably, as herein shown, by means of a shaft or rod a, provided with right and left threads or worms (1 a), (see Fig. 4,) which engage corresponding threads on the sliding blocks 0. a.

other, according to the diameter of the wire to be threaded.

. that the threading-rolls are loosely mounted on their studs or pins a a and are free to rotate thereon, while at the same time they are revolved or carried about the wire I) to be threaded by the rotation of the cylinder (1 about the shaft 01,. It will further be noticed from Fig. 3 that the threading-disks are set "at an angle to each other, which angle may a be changed, according to the pitch of the thread desired to be formed on the wire. The

rotation ofthe carrier 0. forthe threadingrolls, combinedgwith the angular positionof said rolls, effects the feed of the wire in the f'prop'e'ror desired "manner and at the desired rate to form on the wire a uniform and predetermined number of threads to the inch or other length. The rotation of the carrier for i the threading-rolls may be effected by a drivi'h g-b'elt passed about the cylinder 0. as above described, or in any other suitable or desired manner. j

The wire under the action of the thread- By turning the shaft or rod a the threadingdisks may be moved toward or from each% and preferably approximating a right angle to the movement of the wire while under the toward and from the roll I) to insure proper bending of the wire. The rolls b b are preferably located substantially in line with each other and substantially parallel to the path of movement of the wire while under the action of the threading disks or rolls, and the wire (2 is passed between the rolls b b (see Fig. 1,) and is thereby caused to move toward the threading-rolls at an angle to the pathof movement of the wire while under the action of the said threading-rolls.

', The wire I) may be taken from a reel b loosely supported on an 'arm b, secured to the base A and extended substantially at right angles to the carrier for the threadingl disks, and the said wire on its passage to the i deflecting or bending rolls 1) b may and 7 By reference to Figs. 3 and 5 it will be seen preferably willbe supplied with oil by means of a wick I), of felt or other suitable material, extended down into an oil pot or vessel b supported by a bracket or upright 19 the said wick being seen red to a preferably curved flange Z2 erected from the top of the oil-pot. The studs 1) 1), upon which the deflecting or bending rolls are loosely mounted, are fastened to a support, shown as a plate Z9 extended from the oil-pot 19 the said plate also having secured to it a block I), provided with a passage for the wire and forming a guide for the wire. The plate 12 may and preferably will have attached to its upper surface, at the rear of the rolls 1) b aslotted block I)", also constituting a guide for'the wire and normally covered by a movable piece or arm I), which is shown as pivoted at I3 to the plate I1 and adapted to be turned on its pivot, so as to uncover the slot'in the said guide-block. The guide-block b is extended to near the threading disks or rolls a a and firmly supin}; rolls or disks carried about the same by the rotation of their carrier is subjected to a considerable torsional strain, and the primary.

feature of this invention consists in resisting the aforesaid torsional strain, so as to pre v'en't twisting or turning of the wire without hardeni'ngor otherwise injuriously affecting the w1rethat is, without subjecting said wire to. such pressure or gripping forcea's will crush, harden, and render brittle the wires desirable result Iaccomplish by c'au'sin'gthe wire on its passage to thethreadin g roll's to move in-"a path at an. angle with tive surfaces or said disks and presents the said wire in an accurately-central position between the threading-rolls, while a nosepiece h on the stationary shaft a supports the threaded wire close up to the active surfaces of the threading-disks. The unthreaded wire is drawn from the reel b by the threading:

disks, which have the double function of threading and feeding the wire, and is embedded in the wick or oiler 5 which acts to keep the wire thoroughly lubricated and facilitates the action of the threading-disks.

The oil pot or vessel 19 may, if "desired, have secured to it a wire-guide Z9 normally covered by a plate I2 pivoted at I1 The threaded wire issues from the hollow stationary shaft a through a nose b and may and preferably will be wound into a coil upon a reel 1), which is, as herein shown, both ro-.

rated and reciprocated from the cylinder (1 which in the machine herein shown as em bodying this invention constitutes the main or driving shaft for the winding mechanism.

The rotation of the reel Z7 may be efiected, as shown, by means of a gear or pinion c, attached to or formed on the cylinder at and meshing'with a gear fast on a shaft 0 having hearings in the upright A and in a hub c on an arm a, projecting from said upright. (See Fig. 3;) The shaft 0 has fast on it a worm 0 which meshes with and rotates'a worm-gear c on a sleeve 0 extended through a hub 0 attached to the frame of the machine, the said sleeve being secured in said hub against longitudinal movement by a metal washer 50, screwed upon the end of the sleeve 0 The sleeve 0 has extended through it a sleeve 0 provided with a flange e and having secured to its end beyond the sleeve 0 a detachable worm 0 preferably screwed on the sleeve 0 and locked thereon by a suitable check-nut c. The sleeve 0 is engaged with the sleeve 0 so as to rotate therewith and yet enable the said sleeve to slip by means of a friction device, preferably leather or like washers e 0 interposed, respectively, between the flange 0 and the sleeve 0 and between the latter and the worm 0 The sleeve c has extended through it a shaft 0", on which the reel Z2 is fastened, and the said shaft is engaged with the sleeve 0, as shown by a pin or stud 0 fast on the flange 0 extended into a suitable hole in the reel 12, and the said pin is made of sufficient length to permit the shaft 0 and its reel to be reciprocated without disengaging said shaft from the sleeve 0 The reciprocation of the shaft 0 and its attached reel is effected, as shown, by means of an elbowlever 0 pivoted to the frame of the machine and having one arm 0, provided with a gearsegment 0, in mesh with gear-teeth on a collar or sleeve loose on the shaft 0 but retained thereon against longitudinal movement, as by a shoulder e and a nut 0 The other arm 0 of the elbow-lever engages a camgroove 0. in a hub on a shaft 0, supported in a suitable bearing 0 and provided with a worm-gear c ,which meshes with and is driven by the worm c.

By reference to Fig. 1 it will be seen that the-unthreaded wire I) is deflected or bent on its passage to the threading disks or rolls and that the movement of the said wire toward the said threading-disks is thus at an angle to the path of movement of the wire while under the action of the said threading-disks, and by reason of this arrangement the wire is held from twisting or turning by the threadingdisks, which are positively carried about the said wire to feed it along, and in this manner screw-threaded Wire may be formed with a substantially-large number of substantiallydeep threads to the inch (see Fig. 8) without injuriously affecting the strength and life of the wire, for it will be seen that the outer surface of the unthreaded wire is not crushed or hardened, but is left unbroken and in its original condition, and in this condition it is presented to the threading-disks, and, furthermore, it will be seen that the wire is fed forward by the threading-disks and is not subjected to severe longitudinal and torsional strain and pressure after it is threaded.

The threading-disks may and preferably will be made of substantially-large diameter to avoid heating of the same, and thereby enable the said disks to be run at a great speed and consequently increase the output of the machine.

The active surfaces or peripheries of the threading disks may and preferably will be made substantially narrow and provided with a plurality of annular projections and grooves, and one of said disks may be provided with one more annular projections than the other, which latter is left with the re; mainder of its periphery smooth, so as to form a solid support or bearing for the wire While it is being acted upon by the initial projection on the other disk. In the present instance the threadin,,-disk a is shown as provided with four annular projections 3 and the disk a with three annular projections 3 and a smooth portion 4. The annular projections 3 are and may be of the full depth it is desired the thread should have.

With the machine herein shown I am enabled to produce a superior screw-threaded wire having a substantially-large number of substantially-deep threads to the inch from a cheaper wire at a minimumcost without decreasing the ductility of the wire and without varying the number of threads to the inch.

I have herein shown one form of device or mechanism with which the unthreaded wire is caused to move toward the threading disks or rolls in a path at an angle to the path of movement of the wire while under the action of the said threading rolls or disks, whereby the said wire is held from twisting or turning and whereby it may be presented to the action of the threading disks or rolls in its normal condition and without its outer skin or surface being broken, crushed, hardened, or otherwise injuriously affected; but I do not desire to limit my invention to the particular construction of wire deflecting or bending device or apparatus shown.

By reference to'Fig. 5 it will be seen that the threading disks or rolls are loose on their studs or pins a 0/ and are provided with 'antifriction center and. side bearings, which enables the disks to turn very easily and thereby in this respect also relieves the wire from torsional strain.

While the mechanism for threading the wire isv herein shown as rotatable rolls or disks, the invention should not be limited to this or any other specific mechanism, as I consider that'any mechanism for threading wire in thecombinati'on with means for bending the Wire would be within my invention.

I claim-- 1. In a machine of the class described, the combination of the following instrumentalities, viz: threadingdisks or rolls to act'on the wire and form the threads thereon, a rotatable carrier for said threading disks or rolls, and

- 7. means to cause the wire onits passage to the threading-rolls to move in a path at an angle to the path in which the wire is moved while under the action of the said threading-rolls, substantially as described.

2. In a machine of the class described, the combination of the following instrumentalities, viz: rotatable threading disks or rolls to act on the wire and form the threads thereon, and .a wire deflecting or bending device to act on the unthreaded wire and cause the same. on its movement toward the threading disks or rolls to travelin a path at anangle to the path in which the said wire is moved while under the action of the threading rolls or disks, whereby the said wireis held from twisting under the action of the threading rolls or disks and may be presented to the action of said rolls or disks in its normal condition, substantially as described.

8. In a machine of the class described, the combination with athreading disk or roll of substantially-large diameter having a substantially-narrowperiphery provided with a plurality of annular projections and with a smooth portion forming a bearing for the unthreaded wire, of a cooperating threading disk or. roll of substantially-large diameter having.

a substantially-narrow periphery provided with a plurality of annular projections in excess of the annular projections on the firstmentioned disk or roll, one of the annular projections on the second-mentioned roll coopatin g with the smooth portion of the other roll, substantially as described. I

4. In a machine of the class described, the combination of the following instrumentalities, viz: threading disks or rolls, a carrier for said disks or rolls comprising an outercylinderor sleeve, an inner cylinder or sleeve secured to the outer cylinder but separated therefrom to form an oil well or chamber, and a head attached to said outer cylinder and having converging surfaces provided with a transverse slot; sliding blocks in said slot.

provided with oppositely-inclined faces corresponding to the converging surfaces of said head; studs or pins secured to the inclined.

surfaces ofsaid sliding blocks and upon which said threading-disks are mounted; and anti- .friction-bearings for said disks, substantially as described.

- 5. In'a machineof the class described, the combination of the following instrumentalities, viz: threading rolls or disks to act on the wire and form the threads thereon, a rotata-' ble carrier for said threading rolls or disks, a reel for the unthreaded wire, and a deflecting or bending device interposed between said reel and said threading rolls or disks, substantially as and for the purpose specified.

6.. Ina machine of the class described, the combination of the following instrumentalities, viz: threading rolls or disks to act on the wire and form the threadsthereon, arotatable carrier for said threading rolls or disks, a reel for the unthreaded wire, a deflecting or bending device interposed between said reel and threading rolls or disks,'and an oiler for the unthreaded wire interposed between said deflecting device and said. reel, substantially as described.

7. In a machine of the class described, the combination of the following instrumentalities, viz: threading rolls or disks to act on the wire and form the threads thereon, a rotata= ble carrier for said threading-rolls, and means to deflect or. bend the wire on its passage to the th readin g-rolls, comprising loosely-men nt ed wheels or rolls arranged substantially in line with each other, substantially as described.

8. In a machine of the class described, the combination of the following instrumentalities, viz: rotatable threading disks or rolls to act on the wire and form, the threads thereon, a wire deflecting or bending device to act on the unthreaded wire and cause the same on its movementtoward the threading disks for rolls to travel in a path at an angle to the path in which the said wire is moved while under the action of'the threading rolls or disks, and an oiling device for the unthreadprevious to its meeting the deflecting-or bending device, substantially as described.

9. In a machine of. the class described,

threading disksor rolls, supports for said rollsprovided with oppositely-inclined faces, ,disks secured to said oppositely -inclined faces,,studs or pins projecting beyond said disks and on which said rolls are loosely mounted, a cap or head on said studs or pins,

and antifriction-bearings for the said threading-rolls interposed between said studs and said threading-rolls, and between the thread ing-rolls and the diskssecured to the inclined faces,-and between the cap or head on the studsor pins and said threading-rolls, sub- ;stantially as described.

10. In a machine of. the classdescribed, the

I combination of the following instrumentalities, viz: mechanism to act on wire and form threads thereon, and means to cause the wire on its passage to thethreading mechanism to move in a path at an angle to the path in which the wire. is moved while under the ac- ;tion of the threading mechanism, substantially as described.

ved wire with which said wire makes contact i 11. In a machine of the class described, the name to this specification in the presence of combination of the following instrumentalitwo subscribing witnesses. ties, viz: mechanism to act on the Wire and form threads thereon, and means to bend the GEORGE GODDU' 5 wire before its presentation to the threading Witnesses:

mechanism. J AS. H. CHURCHILL,

In testimony whereof I have signed my J. MURPHY. 

